Notes

This document is a meeting notes summary compiled by Floyd & Snider Inc. covering discussions between the Port of Seattle and the Washington Department of Ecology regarding a potential 401 Permit for the proposed Stormwater Master Plan Update and third runway construction at Sea-Tac Airport. It includes a master list of technical issues requiring resolution, categorized by status, covering topics such as detention sizing, stormwater modeling, wetland hydrology, and natural resources mitigation. The document defines terms used in the negotiations and clarifies that resolutions reached in these discussions are subject to further public review and final permit decisions.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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